Ultrasonic transducer of magnetic material in the ultrasonic cleaning machine

The magnetic material is obtained by mixing, pressing and sintering the sieved iron, iron and boron ultrafine powder. Machined into different shapes according to product application requirements. Since the material is chemically active and highly oxidizable, its ultrasonic cleaning transducer needs to be electroplated. However, the quality of electroplating coating is closely related to its pretreatment. This pretreatment process generally includes processes such as degreasing, derusting and activation. If such a pre-treatment process is not cleaned, it will bring latent defects to the final electroplating product, causing problems such as foaming and peeling of the plating layer. Defective magnetic material parts will lose their marketing value and be scrapped. If a magnetic material part with a concealed defect is applied to the equipment, it may cause the whole machine to malfunction due to the failure of the unqualified part, and even cause serious consequences. Therefore, the magnetic material ultrasonic cleaning machine plays an important role as an auxiliary equipment in the production process.

the product cleaning process

The magnetic material is not as dense as the forged metal material, and is a microporous material, and its porosity brings many difficulties and troubles to the pre-plating treatment. In addition to removing the alkaline, acidic substances and dirt from the surface of the workpiece, the biggest difficulty of piezoelectric ultrasonic cleaning is how to remove the dirt from the micropores.

For the general requirements of resisting magnetic materials, the previous pretreatment processes are: alkaline degreasing - water washing - pickling (bleaching, neutralization) - water washing - surface activation - electroplating; Simple, but it has higher requirements for degreasing agent, and it needs to use de-oil degreaser for strontium-iron-boron. The degreaser degreaser has a complicated formula and requires many kinds of raw materials, and the user preparation process is very troublesome. And once the ratio is improper, it will fail and the utility will be poor. After ultrasonic sterilization equipment, the pretreatment process of magnetic materials is generally: (1) alkaline degreasing - water bleaching - water bleaching - ultrasonic fine bleaching - dilute nitric acid treatment (neutralization, bleaching) - water rinsing - Water rinsing - ultrasonic fine bleaching - activation treatment - electroplating. (2) Alkaline degreasing - water rinsing - water rinsing - ultrasonic fine bleaching - dilute nitric acid (neutralization, bleaching) treatment - water rinsing - water rinsing - ultrasonic fine bleaching - activation treatment - water rinsing - water rinsing - ultrasonic fine bleaching - electroplating. (3) Ultrasonic alkaline degreasing - water rinsing - water rinsing - ultrasonic fine bleaching - dilute nitric acid (neutralization, bleaching) treatment - water rinsing - water rinsing - ultrasonic fine bleaching - activation treatment - water rinsing - water rinsing - ultrasonic fine bleaching - electroplating.